package project.pianpian.mapper;

import project.pianpian.entity.Demo;
import org.apache.ibatis.annotations.Mapper;


/**
 * Description:
 * Param:
 * return:
 * Author: HSY
 * Date:2022/12/26
 */
@Mapper
public interface DemoMapper {
    int  addDemo(Demo demo);
    Demo getDemoByOrderId(int orderId);

}
